Peter taltavtjll



UNITED STATES PATENTy OEEICE.

PETER TALTAVULL, oF WASHINGTON, DISTRICT or` oo IIUMIsIA.`

IMPROVEMENT FOR BLowiNe oFF STEAM.

Specification forming part of Letters Patent No. 49,318, dated August 8, i865.

To all 'whom it may concern:

Beit known that I, PETER TALTAVULL, of the cityand county of Washington, in the Disy trict of Columbia, have invented certain new and useful lmprovementsfor Blowing oli' Steam from Boilers on Vessels; and l do herebydeclare that the following is a full and exact description thereof, reference being had to the accompanying drawings and letters ot' reference marked thereon, like letters denoting the same parts in the several figures.

The object of my invention is to allow the blowing oft' of steam when necessary without noise-as, for instance, in landing or receiving passengers at a dock or wharf, or in various services required of war-Steamers where silence is required, as on blockade duty.

The blockade of our coast for several years past, or that of a few harbors, has shown'the necessity of steamers to makeit more eectual,

and their being prepared, particularly'at night,

to get under way at a moments warning, as also to keep their position concealed by avoid,- ing unnecessary noise and light.` To `keep up 'a good head of steam the furnace-doors should be shut, and to open them would more or less expose the position of the vessel.

By my arrangement I can keep the furnacedoors closed and get rid of surplus steam without noise. This is done by a discharge ofthe same below the waterline, and provides for its complete condensation before its passage through the side of the vessel.

In the drawings, Figure lisacross-section of the vessel, showing in end elevation my apparatus. Fig. 2 is an enlarged section through the main portion of said apparatus. Fig. 3 is 'a cross-section on line s s, Fig. 2. Fig. 4-is a top or end view ot Fig. 2.

To enable others skilled in the art to make and. use my invention, I will proceed to describe it by the said drawings and the letters of reference marked thereon.

A and B are each iron pipes, communicating through the side of the vessel below the waterllne. G is a pipe leading from the steam-space in the boiler, and communicating with the cylindrical chamber D, which is in aline with,

pipe B.

E, F, and G are hollow shells or pipes, thickly perforated with apertures, e, f, and g, `as repl resented, and mounted eoncentrically one within the other. H is a rod of metal which lies in the center of this set of tubes E: F G. Wings are provided, projecting from the surface of H, G, and F, which maintain the proper distances of the several shells and otA the rod H each from the other. (See Fig. 3.)'

Dl is an enlarged space or swell on chamber D, extend ing all around, directly opposite the holes @,f, and g in the pipes, and communicates freely with pipe C. It follows that the` steam coming from theboiler through thepipeG passes into lthe enlarged space D', flowing freely in ward through the several holesaf, and gin the direction-of the arrows, and iills the spaces between ihe several pipes or shells. From thence it iows along in lines parallel to central stein or axis, H, and escapes with considerablevet lority into the pipe B, and flows along through the same out ot the. side of the vessel into the water or sea. This forces along ari-active cnrrent of water, which iiows inthrough the pipe A and out from the pipe B with a rapidity proportioned to the quantity and velocity of the steam escaping. It is important that `the cold water thus received and discharged shall lbe sufficient to condense all the steam.

The discharge ends of the several pipes E, F, and G, as well as axis H, are somewhat tapered or contracted, made conicalas reprc-` sented, so that by adJusting them relatively one to the other the areas ot' theouter orifices may be varied so as to `discharge the steam with greater or less velocity, as desired.` The other or inner ends of these pipes are provided with stuing-boxes E',F, G', and H', and with screws E2, F2, Snc., by which each pipe may have a longitudinal movement and the open Y asY the steam 'commences to be through the safety-valve the fact will beinanitested by the movement of the safety-valve lever or othersuitable means, and the engineer l will vigilantly'attend to the adjustment of my ments the'area for the escape of steam may be varied at pleasure and with ease. It may discharge the steam at the full boiler-pressure, (any cock, ysafety-valve, or other device in pipe c being assumed to be wide open,) in which case the velocity will generate a very rapid current of cold water through the pipes A and B; or it may discharge the steam under no considerable pressure except that necessary to force the steam a few feet below the level of the sea, in which case the ordinary safetyvalve or any other suitable devices may be used in the pipes C, or to control the commu nication thereof with the boiler; but in such Y case the current through the pipes A and B will be moderate, and the device will be much less efficient than y son of the current of water through A and B being very moderate.

in the former case, by rea- In the use of my invention the pipes A and B may be provided with Kingston valves, or any other known means of making them watertight when required for repairs orother reason; but they should be allowed to stand Y entirelyI open when in proper condition for use.

An ordinary safety-valve loaded with Weights or springs may indicate in the ordinary manner the degree of pressure at which the steam shall commence to blow off. Under ordinary circumstances reasonable precautions will pre- A vent the production of any steam to be blown oli', and at such times the parts F, G, and H may be drawn outward or toward the center ot' the vessel to their fullest extent. Now, as soon discharged apparatus and the proper supporting of the safety-valve in case it is important to maintain strict silence and discharge considerable quantities of steam. TheI moment any indicationsV of concussions or noise are manifested outside the vessel the safety-valve must be supported by the ordinary cord or other means, and the parts H, G, and F moved by turning the screws so as t'o contract the openings between the shells where the steam escapes into pipe B, allowing itto escape at a higher pressure.

The necessity of separately supporting the sate: y-valve lever may be obviated by any convenient mechanical connection of the parts H, Gr, and F to a cock, screw-valve, or other de-y vice, wherebylthesteam shall be discharged from the boiler into the pipe C independently ofthe safety-valve but in case the steam is to be discharged through the ordinary safetyf valve at a given pressure, it becomes importan t to sustain the safety-valve in some manner, p as otherwise i t would close when the pressure accumulated in the pipe C by the contraction cold water continually received and discharged from the sea.

In case the violence of the action going on within the pipe B shall cause-inconvenience by producing sound within the vessel, the exterior of the part B and. the other parts may be cases to any desired thickness with fibrous material, tan-bark, or other convenient means of deadening sound.

I prefer the same device to be employed in blowing oft' the water from boilers by connecting the blow-oft` pipe to a supplemetary pipe, which may be used whenever the ordinary and frequently-occurring operation of blowing of1c shall be required to be performed with great stillness.

The side of the vessel is designated by M. The pipes A and B may open through the same at points very near or considerably distant from each other, as may be most convenient.

My apparatus may also be made use of to pump the ship by simply attaching another pipe or arm at or near the elbow of pipe A, extending down to the bilge, and having a stopcock near the said elbow, to be opened at time of pumping. The blowingotfot'the steam will creare a suction, and the water in the hold willl be drawn up through this additional pipe orarm, and also through the verticalarm of A, and will be forced out of the side of the vessel through pipe B, thus pumping the ship in simply blowing off surplus steam.

Having now fully described my invention, what I claim as new, and desire to secure by Letters Patent of the United. States, is'as follows:

the water-inducting pipe A, and the water-discharging pipe B, combined and arranged so as to receive and discharge a powerful current of water through the side M of the vessel, substantially in the manner herein set forth. f

2. The combination of the concentrically arranged and adjustable pieces E, F, G, and El,

operating in the mannerv substantially as described, and for the purpose set forth.

3. The combination of the pipes A, B, and C with the adjustable pieces E, F, G, and H, adapted to control the discharge of iuid,lsub stantia'lly as and for the purpose herein set forth.

PETER TALTAVULL.

vWitnesses:

S. S. FAHNEsTocK, Jos. PEGK.v

1. The steam-pipe C, leading from the boiler,

and for the purpose 

